Add function Game::anything_unlocked()

This will be a useful shorthand to ask "do we have the Secret Lab, or
any Time Trial, or Intermission replays, or No Death Mode, or Flip Mode
unlocked?"

desktop_version/src/Game.cpp

@@ -7313,3 +7313,20 @@ int Game::crewmates()
     }
     return temp;
 }
+
+bool Game::anything_unlocked()
+{
+    for (size_t i = 0; i < unlock.size(); i++)
+    {
+        if (unlock[i] &&
+        (i == 8 // Secret Lab
+        || i >= 9 || i <= 14 // any Time Trial
+        || i == 16 // Intermission replays
+        || i == 17 // No Death Mode
+        || i == 18)) // Flip Mode
+        {
+            return true;
+        }
+    }
+    return false;
+}

desktop_version/src/Game.h

@@ -286,6 +286,7 @@ public:
 
     std::vector<int> unlock;
     std::vector<int> unlocknotify;
+    bool anything_unlocked();
     int stat_trinkets;
     bool fullscreen;
     int bestgamedeaths;